As to P38 compressibility issues below 10,000feet. Well its still possible if TAS is above 460MPH. P38 Operating handbook Page30 illustrates this quite clearly. Exceed 460TAS at any altitude and you re in the realm of compressibility affects in the P38.
Try doing some testing and you will see the compression problems start way before 420 IAS and or 460 TAS as stated in the Manual.
09-23-2009, 07:03 PM
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